Francesco, you missed a piece. 'head' is part of the expression. :) What Carl is looking for is one or the other of these:
head $ tail [1,2,3]
-- or --
head . tail $ [1,2,3]
The first one is shorter and fine for inlining, but I generally prefer the second form... it helps intuition about eta reduction, refactoring, and additional composition.
On Thu, Aug 18, 2016 at 05:03:21AM -0700, Carl Petersen wrote:
> How do you rewrite head (tail [1,2,3]) without parenthesis.
Hello Carl, simply
λ> tail [1,2,3]
[2,3]
will do! Haskell is not a Lisp, no need to wrap expressions
around ().
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